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Fgb. l6 1926. Re. 16,266

F.- D. WILSON ET AL 'nmusmssiou DEVICE Original Filed Jan. 2. 1925 2Sheets-Sheet 1 ill/fa U T m v N l '23:- u \Q Q .n

Feb. 16 192s. Re 16,266

F. D, WILSON ET- AL 1 TRANSMISSION DEVICE Original Filed Jan. 2; 1925 2Sheets-Sheet 2 JNUENTUR 5 5mm friction induce Reissued Feb; 16, 1926.

UNITED STAT S Re. 16,266 {P N o 1cE'-,

rmannnicx n. W lson AND mommn s. Bonus, 01.? mm, ,rnnmors, assldiroa,

BY m-zsma assremms, 'ro WILSON rue-r01; muracrumxe comm, on ommcwe,IOWA, a conromvrron on Iowa;

mnansnrssrou DEVICEQ Original application and January 2,'1e 2a, Serialin. 0,131. Renewed 06mm- 27,1924; In.)

1,538,626, dated April 14,1925. Application for reissue fled October19,1925. Serial 30,38,543.

To all whom it may concern Be it known that we, FREDERICK D. Wrnson andLnoiqm S. BURNS, citizens-of the United States, residing at Harvey, inthe county" of .I 5 Cook and. State of Illinois, have inventedcertainnew and useful Improvements in Transmission Devices, of WlllCll thefollowmg 1s a speclfic'atlon.

our invention has reference to transmissions devices, and pertainsmoreespecially to such devices, as are designed foruse inconnection withtractordriving mechanism,

' such as has been shown and set' forth in A broken line 3 3 of-Fig'. 2.v

Fig.- 4 is an enlargement of the central Letters Patent No. 1,439,045,issued Decem-' her 19,1922, to said Frederick D. Wilson.-

One of the purposes of said 'mechanismis ito secure the jolnt operationof two sets of devices, such as the treadwheels on opposite sides of a.tractor, andiat' the same time pro-' m vide means forcontinuing theOperation of one of. Sets ofedevices', while interrupting themovement-of the other one;

' was accomplished in said former invention bymeansjof worm-drivegearing, the pitch 3 of the spirals on the worm-shaft being, such astocause an automatic stoppage of the arts associated therewith, upon saidshafts ingdeprived of power. It has been found in practice, however,that therev is a tendency ofsuch worm-shafts to continue their movementforfa time, .c'aus'ed partly bythe 1110- 'Inentum of the parts,and'partly by the fluid by the 011 in. the casing in which -such partsarejenclos'ed. This con- J tinned movement is detrimental to "thepromptaction. ofthe mechanism, such aschanging the direction of atractor at a desired point, but has 'a'tendency to carry the machinepast such point.

',,-The chief purpose .ofhe presentjinvention is to provide means forinstantly. interrupting the movement ofsuch worm shafts,

v as soon as the power isrernoved therefrom,

Thisis; accomplished by means of clutch ,'devices which act as a brakeonthemworr'n drive mechanism, as soon as the same'has been released by-Ithe clutch members by' means of" which-the worm-shaft is Seem ..n1otion.This arrangement ofclutch devices is under the same control as that ofwhich the drive clutch w are set, and is ar rangedso as to operate uponthe -reverse The movement of the shaft, 7, is imparted to the-worm-shafts, 8, .byis'milar groups of- Jmechanisin, andin'the'sfollowing deseripaction of the mechanism for controlling thedrive'clutches. i i e he above named, and otherieatln es an advantagesof the invention, will more fully.

appear, from the following specification,

reference being had .to'the accompanying drawings, in-which Fig. 1 showsthe mam partof the invention, in vertical longitudinal section.

Fig. 2 is' a plan view of the clutch mechanis'm, with one of the clutchmembers broken "Fig. a vertical cross-section onlthe part'of Fig. 1. J v

Fig. 5 is an; end viewof the wheel 19. The mechanism is shown enclosed acasing, ,5, t'ransverselyoi which is the rear-I connection with the maindriveshaft ofthe tractor motor,'so as to be operated thereby. Mounted onthe shaft, 7 ,near' the ends there? of, so as to be rotatable thereonare sleeves,

8, provided on their outer faces'with wonnwhich isjournaled in avcasing, 12, forming an "exte'nsion ofj thecasing,--5. The other sleeve,8, is similarly provided with'aworm drive for engagement with ';aworm-gear wheel, 13, on a shaft, 14, journaled 1na smg,

forth. in [said former application, the pur- .sp1rals, 9, one;of whichis engageable 4 a'worm-gear wheel, 10,- fixed on a shaft, 11,

pose being to transmit power from the shaft,

"I; through the shafts, 1 1j and 14 in opposite directions, 'to""drivethe tread .w eels on opposite sidesiof the tractor, '01" for S milar;

ti'on; thereof only one of-jsaid; groups will heji eferred to, thevarious-partsfbeing pro vid'edgwith correspondingi reference num her-sinthe drawings, Fixed to the'inne'l'send 31: the'sleeve," 8, is aclutch-member, 1 6,;hel d 1;

in which is a. series of friction discs, 17, adapted for engagement witha simllar ser es of discs, 18, carried on the rim of a wheel,

.. the wheel, 19,-. an

19, fixed 0n the shaft, 7. A clutch-member, 21, is supported on asleeve, 22, loosely mounted on the shaft, 7. The last-namedclutch-member is adapted to' actuate the discs, so as to com ress thesame and lock member, 16, together,

causing a rotary movement of. said wheel,

and the sleeve, 8. The clutch member, 16, isprovided at 1ts edge with anannular flange, 23, within which are supported friction discs, 24:, forengagement with; similar discs, 25, carr ed by a clutch member, 26.Between the clutch members, 21 and 26, is a circular space rec" arms,31, the ends of which have a-bearing tension,

against the collar, 27, on opposite sides ofthe shaft, 7. Theapplicatlon of force to said arms operates to crowd the members, 21 and26, outwardly, resulting in the engagement of thediscs, 17 and 18,asbefore mentioned.

. The clutch member, 26, is held from 1-0 tation by means of forked'arm,33, secured b to the collar, 27, and provided with an ex- 34, havinglateral play in a boxing, 35, projected outwardly from the casing, 5.The inner ends of the forks'of thearm, 33, are bent outwardly, forengagement with lugs, 36, on the ends of the arms, 31. After the discs,17 and 18, have been engaged, in

order to release the same,the rod, 30, is operated to move the arms,31','-toward a central position, a continued movement-thereof,bringing'the discs, 25, into contact with the discs, 24, which acts as adrag uponsthe member 16, causing the same to at onceeease from rotating.Y

Each .of the clutch mechanismsis pro vided with one of-theoperatoflsrods, and when both of said rods are actuated at the same timethefshafts, l1 and 14, are simultaneou'sly driven. "Updlithe forceof'either of the rods, '30','.being' withdrawn the shaft controlled bythe other .rod continues to rotate, while the release of the pressureof-the The release of the'pressure of the other rod, 30, operates in thesame way with the de vices underth control thereof. /In case itfirst rodnot only clutch, but throws the brake clutch into" action, causing aninstant stoppage of the which is controlled thereby,

worm-drive,

is desired to stop thev mechanism ,quickly,

.this can be done-by operating both of the 1 5, is an op-' is bent atopposite disengages the operating,

rods the same time, to free the active tata.ble' on the shaft, 7, andconnected with the Worm sleeve by means of a portion extending into arecess in the end of the sleeve,

the connection between said parts being preferably of a threadedcharacter. On the outer end ofc the member, 38, is an annular flange,39, within which is held a ballbearing member, 40, encircled by acomplementary member,' 41, which is,held .in a boxing, 4-2, in the endof the casing, 5. The adjacent faces of the parts, 40 and 41, aregrooved to form races :for series of balls, 43; By' means of thethreadedconnection between the parts, 8 and 38, a longitudinaladjustment of the extension may be secured. After the position of suchextension has been established, it may be locked from displace, ment'bymeans of a collar, 5L4, slidable on the reducedportion of the extension,and

rotatable therewith; A portion of the collar engage flattened endportions of the memer, 8. The collar, 44, also bearsagainst the innerend'of the bearing, 40, and prevents outward movement of the worm-gearmember, '8.

It will be evident that this is a very simple arrangement for supportingthe outer ends 'of'the worm-gears, and one wherein each of the wormdevices is independent of extension, 38, and,

edges'thereof, so as to theother, so that the end-thrust to which thesedevices are subject, when. in action, will not be imparted from onethereof to the other. It is also obvious that this end thrust is fullytaken care of in the style of support for the worm-sleeve hereinaboveset forth. In the mechanism shown, when both/of ,the worm devices wouldbe in operation; either forwardly or reverse, the line of thrustwouldbe' in the same direction, and the eiid thrust in-either'.direction is fully overcojme by the bea'rings in the ends ofthe casing, .5.

Another] advantage of the worm-gear drive above mentionedis found inthecom- 'paratively short worm-body, with a correspondingly reducedlength of opening to be drilled therein, greatly "facilitating themanufacture thereof.

WVhat weclaim, and desire to secure by Letters Patent, is:

1. In a device of the classdescribed com;

prising a driving element, and an element driven thereby; gear'mechanlsm operatively connected'to. said driven element; a. pluralityof friction clutch-driving discs adapted to -co-operate to impart themovement nism; a' plurality of friction clutch discs capable of a brakeaction on said gear mechanism; manually operable means adjacent thedriving discs for actuating them; and

non-rotatable means between the driving and biake discs operativelyconnected with and movable toward the said'manually operable means foractuating the brake discs when the driving discs are released.

2. The combinationof two friction disc clutches, one adapted to rotateand the other to stop a propelling mechanism for a vehicle andoperatively connected for alternate actuation; a vertically disposed,manually operable member, mov'ablebetw'een two positions, adapted toactuate said clutches, a non-rotatable member between said clutches,movable toward and away from the driving clutch; arms .fixed to saidmanually'operable member and Yoperatively connected to the non-rotatablemember to moye-the nonrotatable member toward said operable member toset the brake clutch and release the drive clutch, or the reverse, asdesired.

mg mechanism for a vehicle and two multiple. disc clutch mechanisms, oneadapted to rotate and the other to stop the wormgear mechanism; adriving shaft, adapted to. drive saidworm gear mechanism through oneoffsaid clutches; a' driven shaft operatively connected tothe drivingshaft and both clutches, the axis of said driven shaft being at: rightangles to and above, the axis of the last 'named'shaft; a manuallyoperable member for actuating said clutches;

a non-rotatable member, a portion of which,

is between the clutch mechanisms, operatively connected to, movable withand toward said manually operable} member to set one of said 'clutchesor the reverse, as desiredy' a 4. Ina device of the class described, incombination with a driving .shaft and a shaft to-bedriven' thereby, agear mecharotation; and- "means :for' imparting! 'r'movement both clutchoperating 7 mem cause simultaneousfiaction gthereofil nism adapted toimpart the movement of thejdriving shaft to thelast-named shaft;

a drive clutch mechanism including a plumayor friction iscs'ya brakeclutch mechi anism including aplurality of friction discs; an operativemember rotatable withthe first gnamed clutch mechanism, and; capable ofcausing the-engagementof the discs there,-

of; an operative "member. having "a, non-ro-i tatablerelationwith aportion of the brakemechanism' and adapted tocauSe-"the enment of'. thediscs thereof; means j-fo'r ding last-named operatingmember fsired. C ofthe driving element to said gear mecha- 3. The combination of a wormgear drive to set the drive clutch discs and release the brake clutchdiscs or the reverse, as de- 5. In adevice of the class described, incombination with an elongated, oil'tight,

casing and a driven shaft therein, a shaft above and at right angles tothedriven shaft,

worm-gear mechanism' adapted to impart the movement of the first-namedshaft to the last-named'shaft, the worm member of said mechanism beingin the lower part of the casingand below the gear member; a drivingclutch in said casing, 'operatively connected to said worm member,comprised of a series of co-operating discs slidable toward and awayfrom said member; a

brake clutch in said casing, ope ratively connected to said worm-member,comprised of a series, of co-operating discs slidable toward andawayfrom said member; a manually operable member protruding from the casing;means operatively connected to the last-named member, adapted to engagethe drive clutch when 'moved toward the worm member and to engage thebrake clutch when moved in the reverse direction. a

.6. In adevice of the class described, in combination with an oil-tight.casing and a worm-gear mechanism therein, a plurality 3 of clutches insaid casing, each partly comprised of a series of co-operating discs,and connected toa lternately'drive and stop the worm-gear mechanism;power driven means,

also in the casin driving one of said clutche s;a manua y operablemember protruding from the'casing; a clutch actuatin'g member betweensaid' clutches to alternately actuate them and movable toward and awayfrom said gear' mechanism; ineans operatively connecting'the manuallyoperable member to the clutch actuatingmem- 'ber t0 move the same towardthe gear mechanism to set the. drive clutch, and in the reversedirection to set the brakemIutch, both said clutchesoperating on theworm member of the gear mechanism.

The combination of an oil tight casing, a drive shaft and shaft to bedriven thereby, in said casing, the axis of the last-named shaft be'ngat right angles to thefirst-namcd shaft and connected therewith throughsuitable gear mechanism; a, plurality of friction clutch elementsin saidcasing, adapted .toco-operate to impart the -movement of the first-namedshaft to said" gear mechanism'; a plurality of friction" clutch elementsin said casing, capable of a. brake actionon'said g'earmech'anism; amovablev non-rotatable member between the -plura1ities 'of clutchelements, movably connected .to the casing, adapted to cause theiralternate actuation; a manually operable member protruding from thecasing and operativellly connected to .set thegfdrive clutch whennonsiiotatablemember i3?- nio ved toward themgear mechanism and to setthe brake. clutch and release the drive clutch when moved in theopposite direction. 8. In a; device of the class described incombination, an oil tight casing and a drive shafttherein; a shaft to bedriven by said drive shaft, also in the casing, and jour-' gearmechanaled' above the same; suitable nism connecting the shafts; a iveclutch ada ted to impart the movement of the drive shat to the drivenshaft, comprising a series 'offriction discs; abrake clutch, also in theCitSlng, adapted to retard the movement of the driven shaft when thedrive clutch is released, and com rised of a series of friction discs; amanual y operable member protruding from the basing and movable betweentwo positions; a clutch actuat-' ing member between the drive clutch andthe brake clutch'and positioned jointly by the manually operable memberand'thecasing, and adapted to alternately actuate said clutches byvirtue of its connection with the last-named member; a second clutchactuating member, actuated by the first, to. set the v drive clutch whenmoved toward the gear mechanism, and the first-named clutch'actu atingmember setting the brake clutch when moved away from saidjmechanism.

9. In a transmission device, the combination with a drive shaft, andshaft to be driven-thereby, of a worm-drive mechanism operativelyconnected with said last-named shaft; a clutch member carried by saidfirstnamed shaft, provided with: friction clutch ,elements';'aclutch-member carried b' said worm-drive .mechanism, and provide with,fricfion clutchelements adapted for engagement with said first-namedclutch elements a brake clutch mechanism spaced apart from said clutchdevices; a movable ,meniber in-.

terposcd between said first-named clutch devices and said brake clutchmechanism, capable of alternately actuating the same, gird meansforoperating said niovablememl i a 10. In a transmission mechanism, incombination with a drive shaft, and shaft to be driven thereby, a gearmechanism ada ted to impart the. movement of said drive s aft to thelast-named shaft; a clutch mechanism adapted to impart .the movement ofthe .drive shaft to said gear mechanism, comprising a member rotatablewith said shaft, 2. vmember connected. with said gear mechanlsm, anda'serles of co-operating friction discs, carried partly by oneof saidmembers- 1 and partly by the other; an operating member, loosely mountedon said drive shaft and adapted to actuatei said friction discs, to

cause the engagement thereof; a brake-clutch mechanism in proximity tosaid first-named [clutch mechanism, comprising; a member" incidentlyreleasethe brake clutch and set I the drive clutch or the reverse,"asdesired.

In testimony whereof we aflix our signaturesji V Y. r A

FREDERICK" D. WILSON. LEONARD BURNS. v

